.bg{
	width: 100%;
	height:calc(100vh);
	background-color: rgba(0,0,0,0.1);
}

h2.defen{
	padding-bottom: 1rem;
	color: #fff;
}
h3.tipsErr{
	color: lightcoral;
	padding-bottom: 1rem;
	padding-left: 5%;
}
h3.tipsRight{
	color: forestgreen;
	padding-bottom: 1rem;
	padding-left: 5%;
}